net: make dev->master general

dev->master is now tightly connected to bonding driver. This patch makes
this pointer more general and ready to be used by others.

 - netdev_set_master() - bond specifics moved to new function
   netdev_set_bond_master()
 - introduced netif_is_bond_slave() to check if device is a bonding slave

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 3 insertions, 2 deletions

diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c
index 3b4ec3238ceb..3d7f3664b67b 100644
--- a/drivers/infiniband/hw/nes/nes.c
+++ b/drivers/infiniband/hw/nes/nes.c
@@ -153,7 +153,8 @@ static int nes_inetaddr_event(struct notifier_block *notifier,
                                 nesdev, nesdev->netdev[0]->name);
                 netdev = nesdev->netdev[0];
                 nesvnic = netdev_priv(netdev);
-                is_bonded = (netdev->master == event_netdev);
+                is_bonded = netif_is_bond_slave(netdev) &&
+                            (netdev->master == event_netdev);
                 if ((netdev == event_netdev) || is_bonded) {
                         if (nesvnic->rdma_enabled == 0) {
                                 nes_debug(NES_DBG_NETDEV, "Returning without processing event for %s since"
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index 009ec814d517..ec3aa11c36cb 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -1118,7 +1118,7 @@ static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpi
                 return rc;
         }
 
-        if (nesvnic->netdev->master)
+        if (netif_is_bond_slave(netdev))
                 netdev = nesvnic->netdev->master;
         else
                 netdev = nesvnic->netdev;